Description

The TS-900 PXI Semiconductor Test System is an integrated test platform that offers comparable system features and capabilities found in proprietary ATE systems. Available as a bench top, with an integrated cart, or with an integrated manipulator, the TS-900 takes full advantage of the PXI architecture to achieve a cost-effective and full-featured test solution for device, SoC and SiP test applications. The test system incorporates a custom-designed, performance test interface that supports the use of PCB DUT (Device Under Test) boards - a proven and high-performance method for interfacing to the device under test. Additionally, the receiver interface’s pin blocks are field configurable, allowing users to upgrade the receiver when they modify or upgrade the system for new applications. The configuration of the receiver can support up to 512 dynamic digital channels, as well as a range of analog, power supply and RF resources.

For production test applications requiring integration with an automated handler, the TS-900 is available with the Reid - Ashman OM1069 manipulator which provides precise positioning of the test head and the flexibility to interface to automated probers and device handlers. The manipulator’s spring loaded design allows for easy alignment and docking to handlers - eliminating the need for a complex receiver interface. The TS-900M features a handler compatible slide receiver, which offers the flexibility to interface to virtually any device handler. In addition, fixture compatibility is maintained with the TS-900’s bench top receiver configuration, allowing users to interchange load boards between the screw down and slide receiver configurations.

Features

The TS-900 can be configured with up to 512 dynamic digital channels. The base TS-900 platform uses the GX5295 - a 3U PXI, 32 channel, 100 MHz digital I/O card with per channel PMUs. A wide range of digital and analog instrument options can easily be incorporated into the TS-900, offering users a compact test system that can support both functional and DC parametric test capabilities. And with the incorporation of an integral, modular test interface, the TS-900 offers users an application ready test system which can be upgraded or reconfigured in the field if needed. The system is also supplied with various software development and digital vector conversion tools, including support for ASCII, WGL, STIL, VCD and ATP vector formats.

TS-900 Core System Configuration

The basic TS-900 core system includes the following test resources and capabilities:

64 static digital channels (expandable to 128), which can be used for fixture ID, UUT static control or DUT board relay control

Programmable 0 to 48 V user power supply (expandable to 4 channels)

System self-test fixture and test program

ATEasy test executive and programming environment

DIOEasy digital waveform editing and display tool

ICEasy test software development tools

Receiver Interface

The TS-900 platform employs a modular, pogo-pin style receiver interface which consists of various pin blocks and is field re-configurable. Interfacing to the device under test (DUT) is done via a device specific PCB which mates to the pogo pin interface and is held in position with an integral stiffener / hold-down assembly. The hold down assembly employs a screw down mechanism for bench top configurations or a slide receiver mechanism for interfacing to handlers. Both mechanisms employ the same stiffener assembly, allowing users to interchange PCB load boards between the two types of mechanisms.

For digital interfacing, the receiver employs dual, 68-pin block assemblies which connect directly to the TS-900’s PXI digital instrument resources, providing a high performance, controlled impedance interface. For user power connections, a power block is available which supports up to (4) user power suppliers and for general purpose analog and switching applications, a 78 pin block assembly with mating D-sub connector is available. RF and coaxial connections can be accommodated via an 8 connector, SMA block or blind-mate RF connector blocks. All receiver block positions are interchangeable, offering a high degree of flexibility.

TS-900 Receiver Interface

System Self-Test

The TS-900 is supplied with a system self test which includes an interactive self-test software procedure as well as a self-test PCB which interfaces to the receiver. The self-test is an ATEasy based test program and verifies functional integrity of the system and resource connections to the test system interface.

TS-900 Self Test Fixture

Software

The TS-900 is supplied with ATEasy, Marvin Test Solutions' test development and test executive software suite; DIOEasy - a comprehensive digital test tool set for developing, debugging and importing digital test vectors; ICEasy - a library of device test development tools; and all necessary instrument drivers which are compatible with variety of application development environments including ATEasy, LabWindows, LabVIEW, Microsoft Visual Studio languages and more.

The TS-900 ATEasy work space is provided with a pre-configured ATEasy System file and associated instrument drivers. It also provides access to DIOEasy and ICEasy tools, which provide the following capabilities:

Automated DC Parametric Test CreationICEasy's library includes a full set of test capabilities for characterizing a device's input and output DC characteristics. Utilizing the TS-900's PMU per pin capabilities, users are able to quickly create test programs for the following types of tests:

Open and Shorts

Input Leakage (IIL, IIH)

Input Voltage Threshold (VIH, VIL)

Output Short Circuit (IOSH, IOSL)

Output Voltage Threshold (VOH, VOL)

Power Consumption (IDD, IDDQ)

These preconfigured tests, when combined ICEasy's Device Pin and Pin group mapping capability provides the user with a simple and streamlined method to assign tests to specific device pins as well as specifying pass / fail limits for each test, without having to do low-level instrument setup and control. The result is faster test creation and faster time to test.

I-V Curve ToolICEasy's Current - Voltage (I-V) curve tool offers users the ability to graphically plot the I-V characteristics of a device's ESD diodes. This test method can provide insight into device failure mechanisms that can affect a device's I/O pins, such as electrical overstress (EOS), electrostatic discharge (ESD), bond wire problems, and packaging problems. And more recently, the use of I-V curve plots as an "impedance signature" may be useful in identifying counterfeit devices where the impedance or I-V signature of a known genuine part is compared to a suspect part.

ICEasy's I-V curve tools allows users to easily setup voltage & current ranges and step increments as well as defining by name, the specific pin (or pins) to be tested. Additionally, all I/O pins can be plotted on the same graph, providing an easy way to compare all device I-V curves. (see figure below) The plotted data can also be easily exported via the TS-900's test executive (ATEasy). The ability to easily measure I-V characteristics and plot the results is a key feature for failure analysis and design verification applications.

IV Curve Tracer Tool

Shmoo Plot ToolICEasy's Shmoo plot tool allows users to easily vary test parameters on both the X and Y axis without programming - allowing test engineers to visually observe the pass / fail operating ranges of the device under test. An accepted test methodology for device characterization and qualification, the addition of the Shmoo plot feature to the TS-900 platform provides users with a powerful technique for design verification and early production test qualification. Supporting both automated and interactive control, ICEasy's Shmoo tool allows users to change parameters on the fly or to control the test via the TS-900's test manager (ATEasy) as well as logging the resulting data.

Shmoo Plot Tool

Configuration Options

TS-900 with Cart Option

TS-900 with Manipulator

Applications

Design verification for devices and modules

Pilot production and focused production test

Automated failure analysis and test

Counterfeit device detection

The following screenshots show the various features and capabilities of TS-900 Software:

Test Executive

The test executive with tests listed on the left and a log window that displays test results with an IV curve chart:

Test Executive Displaying Test Log and IV Curve Plot

IV Curve Tracer Tool

The IV Curve Tracer tool can sweep on Voltage or Current and plot the results. You can also append the plot to the test log or export the result to a CSV/Excel file. Multiple pins (a group) can be also plotted on the same chart. The tool can be also called in an automated mode, displaying the results directly to the test log.

IV Curve Tracer Tool

Shmoo Tool

The Shmoo tool allows you to configure and display Shmoo plots. The plot can be appended to a the test log, printed or you can also export the results to a CSV/Excel file. The tool can be also called in an automated mode, displaying the results directly to the test log.

The next generation of PXI digital instrumentation offers the capabilities and test features normally only found in proprietary ATE semiconductor systems. This paper provides and overview of how new, advanced PXI digital subsystems can address semiconductor test solutions such as the TS-900, can now offer a broader range of test capabilities for digital, mixed-signal and RF test applications.
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